Optical imaging lens

Abstract

The present application discloses an optical imaging lens, which comprises, in order from the object side to the image side along the optical axis: a first lens with positive optical power; a second lens with negative optical power; a third lens with positive optical power; a fourth lens with optical power; a fifth lens with positive optical power; a sixth lens with negative optical power; a seventh lens with positive optical power, whose image side surface is convex; and an eighth lens with negative optical power. The distance BFL from the image side surface of the eighth lens to the imaging plane of the optical imaging lens along the optical axis, half the diagonal length of the effective pixel area on the imaging plane ImgH, and the distance TTL from the object side surface of the first lens to the imaging plane along the optical axis satisfy the following conditions: 1.8mm<(BFL×ImgH) / TTL<3.0mm. The number of lenses with optical power in the optical imaging lens is eight.

Description

[0001] Divisional application statement

[0002] This application is a divisional application of the Chinese invention patent application with the invention name “Optical Imaging Lens” and application number 202110744955.8 filed on July 1, 2021. Technical Field

[0003] The present application relates to the field of optical elements, and more specifically, to an optical imaging lens. Background Art

[0004] With the rapid development of smartphones, smartphone manufacturers have put forward higher design requirements for mobile phone lenses, requiring them to meet the characteristics of high performance, large aperture, thermal stability, etc., while also providing an optical solution with a larger image surface and higher imaging quality. Summary of the Invention

[0005] In one aspect, the present application provides an optical imaging lens comprising, in order from the object side to the image side along the optical axis: a first lens having positive optical power; a second lens having negative optical power; a third lens having optical power; a fourth lens having optical power; a fifth lens having optical power; a sixth lens having optical power; a seventh lens having positive optical power, the image-side surface of which is convex; and an eighth lens having negative optical power. A distance BFL from the image-side surface of the eighth lens to an imaging plane of the optical imaging lens along the optical axis, half the diagonal length of an effective pixel area on the imaging plane ImgH, and a distance TTL from the object-side surface of the first lens to the imaging plane along the optical axis may satisfy 1.8 mm < (BFL × ImgH) / TTL < 3.0 mm.

[0006] In one embodiment, the effective focal length f of the optical imaging lens and the maximum field of view FOV of the optical imaging lens may satisfy: 7.5 mm < f×tan(FOV / 2) < 8.5 mm.

[0007] In one embodiment, the effective focal length f1 of the first lens, the curvature radius R1 of the object-side surface of the first lens, and the curvature radius R2 of the image-side surface of the first lens may satisfy: 0.7<f1 / (R1+R2)<1.3.

[0008] In one embodiment, the effective focal length f2 of the second lens, the effective focal length f6 of the sixth lens, and the effective focal length f3 of the third lens may satisfy: 0.5<(f2-f6) / f3<1.9.

[0009] In one embodiment, the effective focal length f7 of the seventh lens, the effective focal length f8 of the eighth lens, and the effective focal length f of the optical imaging lens may satisfy the following relationship: 0.7<(f7-f8) / f<1.1.

[0010] In one embodiment, the curvature radius R5 of the object-side surface of the third lens, the curvature radius R6 of the image-side surface of the third lens, the curvature radius R3 of the object-side surface of the second lens, and the curvature radius R4 of the image-side surface of the second lens may satisfy: 1.0<(R5+R6) / (R3+R4)<1.5.

[0011] In one embodiment, a curvature radius R13 of the object-side surface of the seventh lens and a curvature radius R14 of the image-side surface of the seventh lens may satisfy the following relationship: 1.8<(R13-R14) / (R13+R14)<3.4.

[0012] In one embodiment, a curvature radius R16 of the image-side surface of the eighth lens, a curvature radius R15 of the object-side surface of the eighth lens, and an effective focal length f of the optical imaging lens may satisfy the following relationship: 0.7<(R16-R15) / f<1.2.

[0013] In one embodiment, a sum ΣCT of the center thicknesses of the first to eighth lenses on the optical axis and a distance BFL from the image side surface of the eighth lens to the imaging plane along the optical axis may satisfy the following: 1.6<ΣCT / BFL<2.1.

[0014] In one embodiment, the maximum effective radius DT81 of the object-side surface of the eighth lens, the maximum effective radius DT82 of the image-side surface of the eighth lens, and half the diagonal length of the effective pixel area on the imaging plane ImgH may satisfy the following: 1.1<(DT81+DT82) / ImgH<1.5.

[0015] In one embodiment, the combined focal length f123 of the first lens, the second lens, and the third lens, the center thickness CT1 of the first lens on the optical axis, the center thickness CT2 of the second lens on the optical axis, and the center thickness CT3 of the third lens on the optical axis may satisfy the following: 4.5<f123 / (CT1+CT2+CT3)<5.8.

[0016] In one embodiment, the on-axis distance SAG72 from the intersection of the image side surface of the seventh lens and the optical axis to the vertex of the effective radius of the image side surface of the seventh lens and the on-axis distance SAG71 from the intersection of the object side surface of the seventh lens and the optical axis to the vertex of the effective radius of the object side surface of the seventh lens may satisfy: 1.4<SAG72 / SAG71<1.8.

[0017] In one embodiment, the on-axis distance SAG61 from the intersection of the object side surface of the sixth lens and the optical axis to the effective radius vertex of the object side surface of the sixth lens, the on-axis distance SAG62 from the intersection of the image side surface of the sixth lens and the optical axis to the effective radius vertex of the image side surface of the sixth lens, and the on-axis distance SAG81 from the intersection of the object side surface of the eighth lens and the optical axis to the effective radius vertex of the object side surface of the eighth lens may satisfy: 0.7<(SAG61+SAG62) / SAG81<1.5.

[0018] In one embodiment, an edge thickness ET8 of the eighth lens and an edge thickness ET7 of the seventh lens may satisfy: 0.9<ET8 / ET7<2.2.

[0019] Another aspect of the present application provides an optical imaging lens comprising, in order from the object side to the image side along the optical axis: a first lens having positive optical power; a second lens having negative optical power; a third lens having optical power; a fourth lens having optical power; a fifth lens having optical power; a sixth lens having optical power; a seventh lens having positive optical power, the image side surface of which is convex; and an eighth lens having negative optical power. The sum of the central thicknesses ΣCT of each lens on the optical axis and the distance BFL from the image side surface of the eighth lens to the imaging plane along the optical axis may satisfy the following relationship: 1.6<ΣCT / BFL<2.1.

[0020] In one embodiment, the effective focal length f of the optical imaging lens and the maximum field of view FOV of the optical imaging lens may satisfy: 7.5 mm < f×tan(FOV / 2) < 8.5 mm.

[0021] In one embodiment, the effective focal length f1 of the first lens, the curvature radius R1 of the object-side surface of the first lens, and the curvature radius R2 of the image-side surface of the first lens may satisfy: 0.7<f1 / (R1+R2)<1.3.

[0022] In one embodiment, the distance BFL from the image side surface of the eighth lens to the imaging plane of the optical imaging lens along the optical axis, half the diagonal length of the effective pixel area on the imaging plane ImgH, and the distance TTL from the object side surface of the first lens to the imaging plane along the optical axis may satisfy 1.8 mm < (BFL×ImgH) / TTL < 3.0 mm.

[0023] In one embodiment, the effective focal length f2 of the second lens, the effective focal length f6 of the sixth lens, and the effective focal length f3 of the third lens may satisfy: 0.5<(f2-f6) / f3<1.9.

[0024] In one embodiment, the effective focal length f7 of the seventh lens, the effective focal length f8 of the eighth lens, and the effective focal length f of the optical imaging lens may satisfy the following relationship: 0.7<(f7-f8) / f<1.1.

[0025] In one embodiment, the curvature radius R5 of the object-side surface of the third lens, the curvature radius R6 of the image-side surface of the third lens, the curvature radius R3 of the object-side surface of the second lens, and the curvature radius R4 of the image-side surface of the second lens may satisfy: 1.0<(R5+R6) / (R3+R4)<1.5.

[0026] In one embodiment, a curvature radius R13 of the object-side surface of the seventh lens and a curvature radius R14 of the image-side surface of the seventh lens may satisfy the following relationship: 1.8<(R13-R14) / (R13+R14)<3.4.

[0027] In one embodiment, a curvature radius R16 of the image-side surface of the eighth lens, a curvature radius R15 of the object-side surface of the eighth lens, and an effective focal length f of the optical imaging lens may satisfy the following relationship: 0.7<(R16-R15) / f<1.2.

[0028] In one embodiment, the maximum effective radius DT81 of the object-side surface of the eighth lens, the maximum effective radius DT82 of the image-side surface of the eighth lens, and half the diagonal length of the effective pixel area on the imaging plane ImgH may satisfy the following: 1.1<(DT81+DT82) / ImgH<1.5.

[0029] In one embodiment, the combined focal length f123 of the first lens, the second lens, and the third lens, the center thickness CT1 of the first lens on the optical axis, the center thickness CT2 of the second lens on the optical axis, and the center thickness CT3 of the third lens on the optical axis may satisfy the following: 4.5<f123 / (CT1+CT2+CT3)<5.8.

[0030] In one embodiment, the on-axis distance SAG72 from the intersection of the image side surface of the seventh lens and the optical axis to the vertex of the effective radius of the image side surface of the seventh lens and the on-axis distance SAG71 from the intersection of the object side surface of the seventh lens and the optical axis to the vertex of the effective radius of the object side surface of the seventh lens may satisfy: 1.4<SAG72 / SAG71<1.8.

[0031] In one embodiment, the on-axis distance SAG61 from the intersection of the object side surface of the sixth lens and the optical axis to the effective radius vertex of the object side surface of the sixth lens, the on-axis distance SAG62 from the intersection of the image side surface of the sixth lens and the optical axis to the effective radius vertex of the image side surface of the sixth lens, and the on-axis distance SAG81 from the intersection of the object side surface of the eighth lens and the optical axis to the effective radius vertex of the object side surface of the eighth lens may satisfy: 0.7<(SAG61+SAG62) / SAG81<1.5.

[0032] In one embodiment, an edge thickness ET8 of the eighth lens and an edge thickness ET7 of the seventh lens may satisfy: 0.9<ET8 / ET7<2.2.

[0033] This application adopts an eight-piece lens architecture. By reasonably allocating the optical focal length of each lens and optimizing the surface shape and thickness of each lens, the lens can have at least one of the beneficial effects of an extra-large image surface, high resolution, and better macro performance, and can better meet the application requirements of the main camera of high-end smartphones. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Other features, purposes and advantages of the present application will become more apparent through the following detailed description of non-limiting embodiments in conjunction with the accompanying drawings. In the accompanying drawings:

[0035] Figure 1 1 shows a schematic structural diagram of an optical imaging lens according to Example 1 of the present application;

[0036] Figures 2A to 2D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 1 are respectively shown;

[0037] Figure 3 1 shows a schematic structural diagram of an optical imaging lens according to Example 2 of the present application;

[0038] Figures 4A to 4D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 2 are respectively shown;

[0039] Figure 5 1 shows a schematic structural diagram of an optical imaging lens according to Example 3 of the present application;

[0040] 6A to 6D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 3 are respectively shown;

[0041] Figure 7 1 shows a schematic structural diagram of an optical imaging lens according to Example 4 of the present application;

[0042] Figures 8A to 8D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 4 are respectively shown;

[0043] Figure 9 1 shows a schematic structural diagram of an optical imaging lens according to Example 5 of the present application;

[0044] 10A to 10D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 5 are respectively shown;

[0045] Figure 11 1 shows a schematic structural diagram of an optical imaging lens according to Example 6 of the present application;

[0046] 12A to 12D axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 6 are respectively shown;

[0047] Figure 13 shows a schematic structural diagram of an optical imaging lens according to Example 7 of the present application; and

[0048] 14A to 14D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Example 7 are respectively shown. DETAILED DESCRIPTION

[0049] For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely descriptions of exemplary embodiments of the present application and are not intended to limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0050] It should be noted that in this specification, the terms "first," "second," "third," etc., are used solely to distinguish one feature from another and do not limit the features. Thus, the first lens discussed below could also be referred to as the second lens or the third lens without departing from the teachings of this application.

[0051] In the drawings, the thickness, size, and shape of the lenses are slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical and aspherical surfaces shown in the drawings are provided by way of example. That is, the shapes of the spherical and aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustration only and are not drawn strictly to scale.

[0052] In this document, the paraxial region refers to the area near the optical axis. If a lens surface is convex and the location of the convex surface is undefined, it means that the lens surface is convex at least in the paraxial region. If a lens surface is concave and the location of the concave surface is undefined, it means that the lens surface is concave at least in the paraxial region. In this document, the surface of each lens closest to the subject is called the object-side surface of the lens, and the surface of each lens closest to the imaging plane is called the image-side surface of the lens.

[0053] It should also be understood that the terms "comprises," "including," "having," "includes," and / or "comprising," when used in this specification, indicate the presence of the stated features, elements, and / or components, but do not preclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. In addition, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire list of features rather than modifying the individual elements in the list. In addition, when describing embodiments of the present application, "may" is used to mean "one or more embodiments of the present application." And, the term "exemplary" is intended to refer to an example or illustration.

[0054] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by those skilled in the art to which this application belongs. It should also be understood that terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and will not be interpreted in an idealized or overly formal sense unless expressly defined as such herein.

[0055] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0056] The features, principles and other aspects of the present application are described in detail below.

[0057] An optical imaging lens according to an exemplary embodiment of the present application may include, for example, eight lenses having optical power, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens. These eight lenses are arranged in order from the object side to the image side along the optical axis.

[0058] In an exemplary embodiment, the first lens may have positive optical power; the second lens may have positive optical power or negative optical power; the third lens may have positive optical power or negative optical power; the fourth lens may have positive optical power or negative optical power; the fifth lens may have positive optical power or negative optical power; the sixth lens may have positive optical power or negative optical power; the seventh lens may have positive optical power; and the eighth lens may have negative optical power.

[0059] In exemplary embodiments, the image-side surface of the seventh lens may be a convex surface.

[0060] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 1.8mm<(BFL×ImgH) / TTL<3.0mm, wherein BFL is the distance along the optical axis from the image side surface of the eighth lens to the imaging plane of the optical imaging lens, ImgH is half the diagonal length of the effective pixel area on the imaging plane, and TTL is the distance along the optical axis from the object side surface of the first lens to the imaging plane. By controlling the distance along the optical axis from the image side surface of the eighth lens to the imaging plane of the optical imaging lens, half the diagonal length of the effective pixel area on the imaging plane, and the distance along the optical axis from the object side surface of the first lens to the imaging plane to satisfy the conditional formula 1.8mm<(BFL×ImgH) / TTL<3.0mm, the length of the mechanical back focus can be increased, the size of the optical body can be compressed, and this is conducive to reducing the incident angle of the principal ray. More specifically, BFL, ImgH, and TTL can satisfy 2.0mm<(BFL×ImgH) / TTL<2.4mm.

[0061] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional expression 7.5mm < f × tan(FOV / 2) < 8.5mm, where f is the effective focal length of the optical imaging lens and FOV is the maximum field of view of the optical imaging lens. By controlling the effective focal length and the maximum field of view of the optical imaging lens to satisfy the conditional expression 7.5mm < f × tan(FOV / 2) < 8.5mm, the optical system can achieve a better magnification, thereby improving detail recognition capabilities when framing. More specifically, f and FOV can satisfy 8.0mm < f × tan(FOV / 2) < 8.1mm.

[0062] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 0.7<f1 / (R1+R2)<1.3, wherein f1 is the effective focal length of the first lens, R1 is the radius of curvature of the object side surface of the first lens, and R2 is the radius of curvature of the image side surface of the first lens. By controlling the ratio of the effective focal length of the first lens to the sum of the radius of curvature of the object side surface of the first lens and the radius of curvature of the image side surface of the first lens within this range, the effective focal length of the first lens can be effectively controlled, which is beneficial for converging light. More specifically, f1, R1, and R2 may satisfy 0.8<f1 / (R1+R2)<1.2.

[0063] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional equation 0.5 < (f2 - f6) / f3 < 1.9, where f2 is the effective focal length of the second lens, f6 is the effective focal length of the sixth lens, and f3 is the effective focal length of the third lens. By controlling the ratio of the difference between the effective focal length of the second lens and the effective focal length of the sixth lens to the effective focal length of the third lens within a certain range, the optical power range of the second, third, and sixth lenses can be effectively controlled, thereby improving the performance of the optical system. More specifically, f2, f6, and f3 may satisfy 0.6 < (f2 - f6) / f3 < 1.8.

[0064] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional equation 0.7 < (f7 - f8) / f < 1.1, where f7 is the effective focal length of the seventh lens, f8 is the effective focal length of the eighth lens, and f is the effective focal length of the optical imaging lens. By controlling the ratio of the difference between the effective focal length of the seventh lens and the effective focal length of the eighth lens to the effective focal length of the optical imaging lens within a certain range, the seventh and eighth lenses can be effectively controlled to have a symmetrical structure, which is beneficial for balancing aberrations such as coma and chromatic aberration of the optical system, thereby improving the upper limit of imaging quality and the assembly yield of the optical system. More specifically, f7, f8, and f may satisfy 0.8 < (f7 - f8) / f < 1.0.

[0065] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 1.0<(R5+R6) / (R3+R4)<1.5, wherein R5 is the radius of curvature of the object side surface of the third lens, R6 is the radius of curvature of the image side surface of the third lens, R3 is the radius of curvature of the object side surface of the second lens, and R4 is the radius of curvature of the image side surface of the second lens. By controlling the ratio of the sum of the radius of curvature of the object side surface of the third lens and the radius of curvature of the image side surface of the third lens to the sum of the radius of curvature of the object side surface of the second lens and the radius of curvature of the image side surface of the second lens within this range, the optical power of the second lens and the third lens is reasonably distributed, and the contribution of the thickness of the third lens to the field curvature can be made within a reasonable range. More specifically, R5, R6, R3 and R4 may satisfy 1.1<(R5+R6) / (R3+R4)<1.4.

[0066] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional equation 1.8 < (R13 - R14) / (R13 + R14) < 3.4, where R13 is the radius of curvature of the object-side surface of the seventh lens element, and R14 is the radius of curvature of the image-side surface of the seventh lens element. By controlling the ratio of the difference between the radius of curvature of the object-side surface of the seventh lens element and the radius of curvature of the image-side surface of the seventh lens element to the sum of the radius of curvature of the object-side surface of the seventh lens element and the radius of curvature of the image-side surface of the seventh lens element within this range, the optical system can achieve a larger mechanical back focus while ensuring resolution under close-range conditions. More specifically, R13 and R14 may satisfy 2.0 < (R13 - R14) / (R13 + R14) < 3.3.

[0067] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional equation 0.7 < (R16 - R15) / f < 1.2, where R16 is the radius of curvature of the image-side surface of the eighth lens element, R15 is the radius of curvature of the object-side surface of the eighth lens element, and f is the effective focal length of the optical imaging lens. By controlling the ratio of the difference between the radius of curvature of the image-side surface of the eighth lens element and the radius of curvature of the object-side surface of the eighth lens element to the effective focal length of the optical imaging lens within this range, the on-axis spherical aberration, chromatic aberration, and spherical aberration of the optical imaging lens can be effectively controlled. More specifically, R16, R15, and f may satisfy 0.8 < (R16 - R15) / f < 1.1.

[0068] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional equation 1.6 < ∑CT / BFL ​​< 2.1, where ∑CT is the sum of the center thicknesses of each of the first through eighth lenses along the optical axis, and BFL is the distance along the optical axis from the image side surface of the eighth lens to the imaging plane. By controlling the ratio of the sum of the center thicknesses of each of the first through eighth lenses along the optical axis to the distance along the optical axis from the image side surface of the eighth lens to the imaging plane within this range, the thickness distribution of each lens can be controlled, effectively improving the machinability of each lens, reducing the production risk of the entire optical system, and extending the mechanical back focus. More specifically, ∑CT and BFL can satisfy 1.7 < ∑CT / BFL ​​< 2.0.

[0069] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 1.1<(DT81+DT82) / ImgH<1.5, wherein DT81 is the maximum effective radius of the object side surface of the eighth lens, DT82 is the maximum effective radius of the image side surface of the eighth lens, and ImgH is half the diagonal length of the effective pixel area on the imaging plane. By controlling the ratio of the sum of the maximum effective radius of the object side surface of the eighth lens and the maximum effective radius of the image side surface of the eighth lens to half the diagonal length of the effective pixel area on the imaging plane within this range, the manufacturability of the eighth lens can be improved. At the same time, controlling the effective half-aperture of the eighth lens is beneficial to aberration balance. More specifically, DT81, DT82, and ImgH may satisfy 1.2<(DT81+DT82) / ImgH<1.4.

[0070] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional equation 4.5 < f123 / (CT1 + CT2 + CT3) < 5.8, where f123 is the combined focal length of the first, second, and third lenses, CT1 is the center thickness of the first lens on the optical axis, CT2 is the center thickness of the second lens on the optical axis, and CT3 is the center thickness of the third lens on the optical axis. By controlling the ratio of the combined focal length of the first, second, and third lenses to the sum of their center thicknesses on the optical axis within this range, the imaging quality of the optical system is improved while also reducing the system's overall size. More specifically, f123, CT1, CT2, and CT3 may satisfy 4.7 < f123 / (CT1 + CT2 + CT3) < 5.7.

[0071] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 1.4<SAG72 / SAG71<1.8, wherein SAG72 is the on-axis distance from the intersection of the image side surface of the seventh lens and the optical axis to the effective radius vertex of the image side surface of the seventh lens, and SAG71 is the on-axis distance from the intersection of the object side surface of the seventh lens and the optical axis to the effective radius vertex of the object side surface of the seventh lens. By controlling the ratio of the on-axis distance from the intersection of the image side surface of the seventh lens and the optical axis to the effective radius vertex of the image side surface of the seventh lens to the on-axis distance from the intersection of the object side surface of the seventh lens and the optical axis to the effective radius vertex of the object side surface of the seventh lens within this range, the processability of the assembly can be improved. More specifically, SAG72 and SAG71 may satisfy 1.5<SAG72 / SAG71<1.7.

[0072] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula 0.7<(SAG61+SAG62) / SAG81<1.5, wherein SAG61 is the on-axis distance from the intersection of the object-side surface of the sixth lens and the optical axis to the vertex of the effective radius of the object-side surface of the sixth lens, SAG62 is the on-axis distance from the intersection of the image-side surface of the sixth lens and the optical axis to the vertex of the effective radius of the image-side surface of the sixth lens, and SAG81 is the on-axis distance from the intersection of the object-side surface of the eighth lens and the optical axis to the vertex of the effective radius of the object-side surface of the eighth lens. By controlling the ratio of the sum of the on-axis distance from the intersection of the object-side surface of the sixth lens and the optical axis to the vertex of the effective radius of the object-side surface of the sixth lens and the on-axis distance from the intersection of the image-side surface of the sixth lens and the optical axis to the vertex of the effective radius of the image-side surface of the sixth lens to the on-axis distance from the intersection of the object-side surface of the eighth lens and the optical axis to the vertex of the effective radius of the object-side surface of the eighth lens within this range, it is beneficial to control the sagittal height and center thickness of the sixth lens, effectively improve the molding processability of the sixth lens, and enhance manufacturing safety. More specifically, SAG61, SAG62, and SAG81 may satisfy 0.7<(SAG61+SAG62) / SAG81<1.4.

[0073] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional equation 0.9 < ET8 / ET7 < 2.2, where ET8 is the edge thickness of the eighth lens element, and ET7 is the edge thickness of the seventh lens element. By controlling the ratio of the edge thickness of the eighth lens element to the edge thickness of the seventh lens element within this range, the lens manufacturing process of the seventh and eighth lenses can be improved, effectively reducing the risk of optical system molding. More specifically, ET8 and ET7 may satisfy 1.0 < ET8 / ET7 < 2.1.

[0074] In an exemplary embodiment, the optical imaging lens may further include at least one aperture. The aperture may be positioned appropriately as needed, for example, between the object side and the first lens element. Optionally, the optical imaging lens may further include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element on the imaging surface.

[0075] The optical imaging lens according to the above-described embodiment of the present application can utilize multiple lens elements, such as the eight lens elements described above. By properly allocating the optical power, surface shape, center thickness of each lens element, and the on-axis spacing between the lenses, the lens can achieve characteristics such as an ultra-large image area, high resolution, and excellent macro performance, better meeting the requirements of applications such as the main camera of high-end smartphones.

[0076] In an embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface, that is, at least one of the mirror surfaces from the object side surface of the first lens to the image side surface of the eighth lens is an aspherical mirror surface. The characteristic of an aspherical lens is that the curvature changes continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens with a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better curvature radius characteristic, with the advantages of improving distortion aberration and improving astigmatism aberration. After adopting an aspherical lens, the aberration that occurs during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, at least one of the object side surface and the image side surface of each lens in the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens and the eighth lens is an aspherical mirror surface. Optionally, the object side surface and the image side surface of each lens in the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens and the eighth lens are all aspherical mirror surfaces.

[0077] However, those skilled in the art will appreciate that the number of lenses comprising the optical imaging lens can be varied to achieve the various results and advantages described herein without departing from the claimed technical solutions. For example, while eight lenses are described in the embodiments, the optical imaging lens is not limited to eight lenses. If desired, the optical imaging lens may also include other numbers of lenses.

[0078] Specific embodiments of the optical imaging lens applicable to the above-mentioned embodiments will be further described below with reference to the accompanying drawings.

[0079] Example 1

[0080] The following reference Figures 1 to 2D The optical imaging lens according to Example 1 of the present application is described. Figure 1 A schematic structural diagram of an optical imaging lens according to Example 1 of the present application is shown.

[0081] like Figure 1 As shown, the optical imaging lens includes, from the object side to the image side along the optical axis, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8 and a filter E9.

[0082] The first lens E1 has positive focal power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative focal power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive focal power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive focal power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has positive focal power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has negative focal power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive focal power, with its object-side surface S13 being convex and its image-side surface S14 being convex. The eighth lens E8 has negative focal power, with its object-side surface S15 being concave and its image-side surface S16 being concave. The filter E9 has an object-side surface S17 and an image-side surface S18. The optical imaging lens has an imaging surface S19. Light from an object passes through each surface S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0083] Table 1 shows the basic parameters of the optical imaging lens of Example 1, wherein the units of curvature radius and thickness / distance are all millimeters (mm).

[0084]

[0085]

[0086] Table 1

[0087] In Example 1, the object-side surface and the image-side surface of any lens from the first lens E1 to the eighth lens E8 are both aspherical surfaces. The surface shape x of each aspherical lens can be defined by, but is not limited to, the following aspherical surface formula:

[0088]

[0089] Wherein, x is the distance vector height of the aspheric surface from the vertex of the aspheric surface at a height of h along the optical axis; c is the paraxial curvature of the aspheric surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the curvature radius R in Table 1 above); k is the conic coefficient; Ai is the correction coefficient of the i-th order of the aspheric surface. The following Tables 2-1 and 2-2 give the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58, A59, A60, A61, A71, A72, A73, A74, A75, A80, A59, A61, A76, A80, A90, A10, A11, A12, A13, A14, A15 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 and A 30 .

[0090] Face number A4 A6 A8 A10 A12 A14 A16 S1 -5.9932E-05 -7.9085E-04 1.3698E-03 -1.6833E-03 1.3174E-03 -6.7742E-04 2.3279E-04 S2 -2.3837E-04 -5.1451E-03 1.0339E-02 -1.3076E-02 1.0863E-02 -6.1869E-03 2.4869E-03 S3 -3.9314E-03 7.6723E-04 1.3455E-03 -2.8782E-03 2.8222E-03 -1.6841E-03 6.6822E-04 S4 -6.6962E-03 7.4969E-04 4.9965E-03 -8.1482E-03 7.2243E-03 -4.1856E-03 1.6830E-03 S5 -1.0122E-02 9.3714E-03 -1.7820E-02 2.6397E-02 -2.6568E-02 1.8413E-02 -9.0019E-03 S6 -6.0120E-03 2.9550E-04 2.8791E-03 -7.9226E-03 1.1433E-02 -1.0210E-02 5.9667E-03 S7 -1.3000E-02 4.3465E-03 -1.2244E-02 2.1414E-02 -2.4758E-02 1.9317E-02 -1.0397E-02 S8 -1.8946E-02 5.1458E-03 -5.5964E-03 5.2551E-03 -3.7923E-03 2.0349E-03 -8.0352E-04 S9 -1.9406E-02 7.5798E-03 -6.7590E-03 4.9677E-03 -2.8167E-03 1.2301E-03 -4.0480E-04 S10 -1.6095E-02 7.4516E-03 -4.4745E-03 1.8164E-03 -4.7401E-04 7.6373E-05 -6.4570E-06 S11 -3.9529E-02 1.6839E-02 -5.5383E-03 1.0673E-03 -3.1535E-05 -4.7951E-05 1.5848E-05 S12 -5.4422E-02 1.9587E-02 -6.6291E-03 1.8102E-03 -3.8563E-04 6.4077E-05 -8.1630E-06 S13 -1.4605E-02 3.8370E-03 -9.7529E-04 1.3924E-04 -1.4256E-05 1.1877E-06 -7.7432E-08 S14 2.4210E-02 -2.5916E-03 3.5977E-05 1.1229E-05 -6.4553E-07 -1.4091E-08 2.9413E-09 S15 1.1488E-02 -4.8634E-03 9.0668E-04 -8.8686E-05 5.2621E-06 -1.9848E-07 4.6098E-09 S16 -1.5707E-02 1.1931E-03 -6.7418E-05 2.3265E-06 -6.5609E-08 3.5453E-09 -2.3333E-10

[0091] Table 2-1

[0092] Face number A18 A20 A22 A24 A26 A28 A30 S1 -5.3485E-05 8.0024E-06 -7.1483E-07 2.6680E-08 1.1248E-09 -1.4877E-10 4.2224E-12 S2 -7.1559E-04 1.4770E-04 -2.1648E-05 2.1957E-06 -1.4627E-07 5.7461E-09 -1.0067E-10 S3 -1.8121E-04 3.3539E-05 -4.1433E-06 3.2500E-07 -1.4553E-08 2.8113E-10 0.0000E+00 S4 -4.7662E-04 9.4133E-05 -1.2578E-05 1.0715E-06 -5.1659E-08 1.0428E-09 0.0000E+00 S5 3.1514E-03 -7.8892E-04 1.3821E-04 -1.6097E-05 1.1173E-06 -3.4864E-08 0.0000E+00 S6 -2.3401E-03 6.1933E-04 -1.0885E-04 1.2135E-05 -7.7349E-07 2.1355E-08 0.0000E+00 S7 3.8926E-03 -1.0081E-03 1.7653E-04 -1.9875E-05 1.2933E-06 -3.6793E-08 0.0000E+00 S8 2.2938E-04 -4.6142E-05 6.3024E-06 -5.5037E-07 2.7423E-08 -5.8563E-10 0.0000E+00 S9 9.7463E-05 -1.6648E-05 1.9438E-06 -1.4657E-07 6.4036E-09 -1.2275E-10 0.0000E+00 S10 1.4841E-08 5.7777E-08 -6.3115E-09 3.3021E-10 -8.8753E-12 9.7886E-14 0.0000E+00 S11 -2.7727E-06 3.0754E-07 -2.2098E-08 9.9167E-10 -2.5071E-11 2.6941E-13 0.0000E+00 S12 7.7570E-07 -5.3566E-08 2.6184E-09 -8.7407E-11 1.8746E-12 -2.2883E-14 1.1678E-16 S13 3.6255E-09 -1.1409E-10 2.2595E-12 -2.5110E-14 1.1645E-16 0.0000E+00 0.0000E+00 S14 -1.4721E-10 4.0230E-12 -6.6274E-14 6.3286E-16 -2.7654E-18 0.0000E+00 0.0000E+00 S15 -5.1630E-11 -3.5826E-13 2.3251E-14 -3.8849E-16 3.2580E-18 -1.1852E-20 0.0000E+00 S16 1.0240E-11 -2.7406E-13 4.1321E-15 -2.7150E-17 0.0000E+00 0.0000E+00 0.0000E+00

[0093] Table 2-2

[0094] Figure 2A The axial chromatic aberration curve of the optical imaging lens of Example 1 is shown, which indicates the deviation of the convergent focus of light of different wavelengths passing through the lens. Figure 2B The astigmatism curve of the optical imaging lens of Example 1 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 2C The distortion curve of the optical imaging lens of Example 1 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 2D The chromatic aberration curve of the optical imaging lens of Example 1 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. Figures 2A to 2D It can be seen that the optical imaging lens provided in Example 1 can achieve good imaging quality.

[0095] Example 2

[0096] The following reference Figures 3 to 4D The optical imaging lens according to Example 2 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Example 1 will be omitted. Figure 3 A schematic structural diagram of an optical imaging lens according to Example 2 of the present application is shown.

[0097] like Figure 3 As shown, the optical imaging lens includes, from the object side to the image side along the optical axis, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8 and a filter E9.

[0098] The first lens E1 has positive focal power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative focal power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive focal power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has negative focal power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The fifth lens E5 has positive focal power, with its object-side surface S9 being convex and its image-side surface S10 being convex. The sixth lens E6 has negative focal power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive focal power, with its object-side surface S13 being convex and its image-side surface S14 being convex. The eighth lens E8 has negative focal power, with its object-side surface S15 being concave and its image-side surface S16 being concave. The filter E9 has an object-side surface S17 and an image-side surface S18. The optical imaging lens has an imaging surface S19. Light from an object passes through each surface S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0099] Table 3 shows the basic parameters of the optical imaging lens of Example 2, where the units of curvature radius and thickness / distance are all in millimeters (mm). Tables 4-1 and 4-2 show the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 and A 30 , wherein each aspheric surface shape can be defined by formula (1) given in the above embodiment 1.

[0100]

[0101] Table 3

[0102] Face number A4 A6 A8 A10 A12 A14 A16 S1 -1.2088E-04 2.1722E-04 -7.3997E-04 1.1533E-03 -1.2370E-03 9.3472E-04 -5.0376E-04 S2 -1.0292E-03 -1.0235E-02 2.9533E-02 -4.4578E-02 4.1624E-02 -2.6060E-02 1.1405E-02 S3 -6.7144E-03 1.3534E-03 9.0950E-03 -1.8101E-02 1.7655E-02 -1.0694E-02 4.3354E-03 S4 -9.1423E-03 6.3451E-04 1.5449E-02 -2.9531E-02 3.0199E-02 -1.9739E-02 8.7168E-03 S5 -1.1881E-02 1.3976E-02 -2.9435E-02 5.0466E-02 -6.0068E-02 4.9317E-02 -2.8313E-02 S6 -6.9462E-03 1.0490E-02 -3.0994E-02 5.9821E-02 -7.5209E-02 6.3890E-02 -3.7603E-02 S7 -1.5032E-02 -8.3911E-04 2.0093E-03 -8.4513E-04 -2.4820E-03 4.3784E-03 -3.5746E-03 S8 -2.5561E-02 9.8378E-03 -1.9779E-02 2.7471E-02 -2.5163E-02 1.5743E-02 -6.8725E-03 S9 -1.9899E-02 1.0719E-02 -1.7339E-02 1.8157E-02 -1.2951E-02 6.6170E-03 -2.4544E-03 S10 -1.2435E-02 7.6824E-03 -6.4082E-03 3.3390E-03 -1.0705E-03 2.0336E-04 -1.9076E-05 S11 -4.3197E-02 1.6605E-02 -1.3559E-03 -3.3102E-03 2.4000E-03 -8.9711E-04 2.1439E-04 S12 -6.1384E-02 2.3571E-02 -7.7728E-03 1.8413E-03 -2.7685E-04 2.3939E-05 -7.6394E-07 S13 -1.8859E-02 8.0240E-03 -2.6231E-03 5.0771E-04 -6.9958E-05 7.2827E-06 -5.6390E-07 S14 3.9363E-02 -3.8535E-03 -2.8055E-04 1.0539E-04 -1.2319E-05 8.6161E-07 -4.0823E-08 S15 2.8692E-02 -1.0745E-02 2.1864E-03 -2.6431E-04 2.1143E-05 -1.1850E-06 4.7891E-08 S16 -1.8970E-02 1.6644E-03 -1.0568E-04 4.3388E-06 -1.1362E-07 2.0278E-09 -3.7873E-11

[0103] Table 4-1

[0104] Face number A18 A20 A22 A24 A26 A28 A30 S1 1.9393E-04 -5.3078E-05 1.0195E-05 -1.3379E-06 1.1389E-07 -5.6527E-09 1.2395E-10 S2 -3.5584E-03 7.9570E-04 -1.2648E-04 1.3944E-05 -1.0129E-06 4.3579E-08 -8.4071E-10 S3 -1.2068E-03 2.3094E-04 -2.9806E-05 2.4752E-06 -1.1931E-07 2.5350E-09 0.0000E+00 S4 -2.6470E-03 5.5169E-04 -7.7354E-05 6.9616E-06 -3.6286E-07 8.3221E-09 0.0000E+00 S5 1.1449E-02 -3.2417E-03 6.2832E-04 -7.9351E-05 5.8780E-06 -1.9362E-07 0.0000E+00 S6 1.5497E-02 -4.4528E-03 8.7282E-04 -1.1112E-04 8.2721E-06 -2.7297E-07 0.0000E+00 S7 1.7720E-03 -5.6879E-04 1.1909E-04 -1.5718E-05 1.1873E-06 -3.9114E-08 0.0000E+00 S8 2.1033E-03 -4.4725E-04 6.4472E-05 -5.9912E-06 3.2309E-07 -7.6693E-09 0.0000E+00 S9 6.5541E-04 -1.2338E-04 1.5842E-05 -1.3133E-06 6.3153E-08 -1.3350E-09 0.0000E+00 S10 -2.3392E-07 2.7744E-07 -3.2848E-08 1.9240E-09 -5.8595E-11 7.4128E-13 0.0000E+00 S11 -3.4694E-05 3.8477E-06 -2.8792E-07 1.3877E-08 -3.8845E-10 4.7934E-12 0.0000E+00 S12 -6.7492E-08 9.9245E-09 -6.0085E-10 2.1156E-11 -4.4585E-13 5.1869E-15 -2.5320E-17 S13 3.1642E-08 -1.2619E-09 3.5061E-11 -6.5767E-13 7.8584E-15 -5.3182E-17 1.5109E-19 S14 1.3639E-09 -3.2364E-11 5.3724E-13 -5.9858E-15 4.0749E-17 -1.3048E-19 0.0000E+00 S15 -1.4118E-09 3.0335E-11 -4.6895E-13 5.0694E-15 -3.6286E-17 1.5406E-19 -2.9230E-22 S16 1.5420E-12 -7.7209E-14 2.9358E-15 -7.7888E-17 1.3689E-18 -1.4359E-20 6.8318E-23

[0105] Table 4-2

[0106] Figure 4A The axial chromatic aberration curve of the optical imaging lens of Example 2 is shown, which indicates the deviation of the convergent focus of light of different wavelengths passing through the lens. Figure 4B The astigmatism curve of the optical imaging lens of Example 2 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 4CThe distortion curve of the optical imaging lens of Example 2 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 4D The chromatic aberration curve of the optical imaging lens of Example 2 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. Figures 4A to 4D It can be seen that the optical imaging lens provided in Example 2 can achieve good imaging quality.

[0107] Example 3

[0108] The following reference Figures 5 to 6D An optical imaging lens according to Example 3 of the present application is described. Figure 5 A schematic structural diagram of an optical imaging lens according to Example 3 of the present application is shown.

[0109] like Figure 5 As shown, the optical imaging lens includes, from the object side to the image side along the optical axis, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8 and a filter E9.

[0110] The first lens E1 has positive focal power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative focal power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive focal power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has negative focal power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has positive focal power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has negative focal power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive focal power, with its object-side surface S13 being convex and its image-side surface S14 being convex. The eighth lens E8 has negative focal power, with its object-side surface S15 being concave and its image-side surface S16 being concave. The filter E9 has an object-side surface S17 and an image-side surface S18. The optical imaging lens has an imaging surface S19. Light from an object passes through each surface S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0111] Table 5 shows the basic parameters of the optical imaging lens of Example 3, where the units of curvature radius and thickness / distance are all in millimeters (mm). Tables 6-1 and 6-2 show the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A24 、A 26 、A 28 and A 30 , wherein each aspheric surface shape can be defined by formula (1) given in the above embodiment 1.

[0112]

[0113]

[0114] Table 5

[0115] Face number A4 A6 A8 A10 A12 A14 A16 S1 -8.1352E-04 2.9410E-03 -8.8901E-03 1.5313E-02 -1.6618E-02 1.1961E-02 -5.9208E-03 S2 -2.9223E-03 -1.3648E-03 9.6394E-03 -2.1147E-02 2.4064E-02 -1.7237E-02 8.3512E-03 S3 -9.6021E-03 1.9357E-02 -3.0274E-02 3.0196E-02 -2.0303E-02 9.3818E-03 -2.9764E-03 S4 -8.6240E-03 -9.0521E-04 2.6408E-02 -5.3334E-02 5.8096E-02 -4.0057E-02 1.8450E-02 S5 -6.3126E-03 -2.0280E-02 8.1295E-02 -1.6536E-01 2.1574E-01 -1.9266E-01 1.2092E-01 S6 -4.2613E-03 6.9908E-03 -2.8111E-02 6.4153E-02 -9.1332E-02 8.6686E-02 -5.6767E-02 S7 -9.8944E-03 -1.2714E-02 3.3694E-02 -5.7562E-02 6.3813E-02 -4.8036E-02 2.5048E-02 S8 -1.5912E-02 4.4032E-03 -1.8641E-02 3.2718E-02 -3.5583E-02 2.5546E-02 -1.2516E-02 S9 -1.5787E-02 1.3281E-02 -3.0640E-02 3.8729E-02 -3.2466E-02 1.8811E-02 -7.6226E-03 S10 -1.1889E-02 4.7253E-03 -3.3456E-03 8.3887E-04 3.1526E-04 -2.9803E-04 1.0229E-04 S11 -3.6387E-02 1.2238E-02 3.7252E-03 -8.0139E-03 5.2073E-03 -1.9984E-03 5.0630E-04 S12 -5.4039E-02 2.0925E-02 -5.4253E-03 4.1158E-04 2.8833E-04 -1.2303E-04 2.4792E-05 S13 -2.2303E-02 8.7795E-03 -2.7221E-03 4.6899E-04 -5.2930E-05 4.4723E-06 -3.0042E-07 S14 4.2215E-02 -4.8090E-03 -3.3926E-04 1.5595E-04 -2.0630E-05 1.6016E-06 -8.2811E-08 S15 3.3966E-02 -1.2367E-02 2.5783E-03 -3.2372E-04 2.6920E-05 -1.5650E-06 6.5424E-08 S16 -1.9727E-02 1.7917E-03 -1.1715E-04 5.0061E-06 -1.3719E-07 2.4637E-09 -3.3212E-11

[0116] Table 6-1

[0117]

[0118]

[0119] Table 6-2

[0120] Figure 6A The axial chromatic aberration curve of the optical imaging lens of Example 3 is shown, which indicates the deviation of the convergent focus of light of different wavelengths passing through the lens. Figure 6B The astigmatism curve of the optical imaging lens of Example 3 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 6C The distortion curve of the optical imaging lens of Example 3 is shown, which represents the distortion values ​​corresponding to different image heights. Figure 6D The chromatic aberration curve of the optical imaging lens of Example 3 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. 6A to 6D It can be seen that the optical imaging lens provided in Example 3 can achieve good imaging quality.

[0121] Example 4

[0122] The following reference Figures 7 to 8D An optical imaging lens according to Example 4 of the present application is described. Figure 7 A schematic structural diagram of an optical imaging lens according to Example 4 of the present application is shown.

[0123] like Figure 7 As shown, the optical imaging lens includes, from the object side to the image side along the optical axis, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8 and a filter E9.

[0124] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has negative optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive optical power, with its object-side surface S13 being convex and its image-side surface S14 being convex. The eighth lens E8 has negative optical power, with its object-side surface S15 being concave and its image-side surface S16 being concave. The filter E9 has an object-side surface S17 and an image-side surface S18. The optical imaging lens has an imaging surface S19. Light from an object passes through each surface S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0125] Table 7 shows the basic parameters of the optical imaging lens of Example 4, where the units of curvature radius and thickness / distance are all in millimeters (mm). Tables 8-1 and 8-2 show the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 and A 30 , wherein each aspheric surface shape can be defined by formula (1) given in the above embodiment 1.

[0126]

[0127]

[0128] Table 7

[0129] Face number A4 A6 A8 A10 A12 A14 A16 S1 -6.0970E-04 2.5864E-03 -7.1403E-03 1.0888E-02 -1.0595E-02 6.9477E-03 -3.1709E-03 S2 -1.7027E-03 -7.8229E-03 1.4932E-02 -1.9261E-02 1.6833E-02 -1.0183E-02 4.3622E-03 S3 -3.0732E-03 -5.3397E-03 1.1561E-02 -1.4285E-02 1.1849E-02 -6.7386E-03 2.6850E-03 S4 -3.1625E-03 -8.3322E-03 2.5128E-02 -3.6447E-02 3.4135E-02 -2.1848E-02 9.7444E-03 S5 -5.6123E-03 -4.4952E-03 1.5513E-02 -2.3818E-02 2.4921E-02 -1.9569E-02 1.1851E-02 S6 -3.7183E-03 5.7199E-03 -2.0225E-02 4.5534E-02 -6.4212E-02 6.0131E-02 -3.8697E-02 S7 -1.5176E-02 6.5340E-03 -1.8002E-02 3.2383E-02 -4.0136E-02 3.4510E-02 -2.0876E-02 S8 -1.9321E-02 4.4796E-03 -7.6578E-03 8.4140E-03 -6.9852E-03 4.3593E-03 -2.0202E-03 S9 -1.7152E-02 6.8001E-03 -1.0512E-02 1.0057E-02 -7.3754E-03 4.2040E-03 -1.7769E-03 S10 -1.6239E-02 9.1855E-03 -6.1576E-03 2.1667E-03 -2.3638E-04 -1.0438E-04 5.0719E-05 S11 -4.5499E-02 2.1150E-02 -3.2413E-03 -3.8854E-03 3.3272E-03 -1.3620E-03 3.5067E-04 S12 -5.7037E-02 2.5145E-02 -8.1401E-03 1.5044E-03 -3.3986E-05 -5.1979E-05 1.3340E-05 S13 -1.9352E-02 7.8391E-03 -2.3923E-03 3.7087E-04 -2.9703E-05 6.0215E-07 1.3251E-07 S14 4.0434E-02 -5.8920E-03 8.6757E-05 8.0294E-05 -1.2102E-05 9.3809E-07 -4.6365E-08 S15 3.0217E-02 -1.2143E-02 2.5848E-03 -3.2380E-04 2.6703E-05 -1.5378E-06 6.3716E-08 S16 -2.1085E-02 2.0387E-03 -1.3759E-04 5.9497E-06 -1.6528E-07 2.9871E-09 -3.2566E-11

[0130] Table 8-1

[0131]

[0132]

[0133] Table 8-2

[0134] Figure 8AThe axial chromatic aberration curve of the optical imaging lens of Example 4 is shown, which indicates the deviation of the convergent focus of light of different wavelengths passing through the lens. Figure 8B The astigmatism curve of the optical imaging lens of Example 4 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 8C The distortion curve of the optical imaging lens of Example 4 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 8D The chromatic aberration curve of the optical imaging lens of Example 4 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. Figures 8A to 8D It can be seen that the optical imaging lens provided in Example 4 can achieve good imaging quality.

[0135] Example 5

[0136] The following reference Figures 9 to 10D An optical imaging lens according to Example 5 of the present application is described. Figure 9 A schematic structural diagram of an optical imaging lens according to Example 5 of the present application is shown.

[0137] like Figure 9 As shown, the optical imaging lens includes, from the object side to the image side along the optical axis, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8 and a filter E9.

[0138] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has negative optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive optical power, with its object-side surface S13 being convex and its image-side surface S14 being convex. The eighth lens E8 has negative optical power, with its object-side surface S15 being concave and its image-side surface S16 being concave. The filter E9 has an object-side surface S17 and an image-side surface S18. The optical imaging lens has an imaging surface S19. Light from an object passes through each surface S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0139] Table 9 shows the basic parameters of the optical imaging lens of Example 5, where the units of curvature radius and thickness / distance are all in millimeters (mm). Tables 10-1 and 10-2 show the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 and A 30 , wherein each aspheric surface shape can be defined by formula (1) given in the above embodiment 1.

[0140]

[0141]

[0142] Table 9

[0143] Face number A4 A6 A8 A10 A12 A14 A16 S1 -5.6245E-04 2.3908E-03 -6.6942E-03 1.0277E-02 -1.0049E-02 6.6179E-03 -3.0337E-03 S2 -1.9302E-03 -7.0394E-03 1.2959E-02 -1.6356E-02 1.4063E-02 -8.3522E-03 3.4964E-03 S3 -3.1129E-03 -4.3620E-03 8.6918E-03 -1.0175E-02 8.2126E-03 -4.5748E-03 1.7921E-03 S4 -2.4270E-03 -1.0304E-02 2.8896E-02 -4.1713E-02 3.9221E-02 -2.5198E-02 1.1266E-02 S5 -4.8234E-03 -8.6442E-03 2.7517E-02 -4.6247E-02 5.3390E-02 -4.4793E-02 2.7711E-02 S6 -3.6411E-03 6.0573E-03 -2.1180E-02 4.7296E-02 -6.6124E-02 6.1506E-02 -3.9401E-02 S7 -1.5669E-02 9.0971E-03 -2.6302E-02 4.8662E-02 -6.0630E-02 5.1847E-02 -3.0986E-02 S8 -1.9594E-02 5.1459E-03 -9.0508E-03 1.0366E-02 -8.7854E-03 5.4833E-03 -2.5062E-03 S9 -1.7431E-02 6.9737E-03 -1.0348E-02 9.6037E-03 -6.8832E-03 3.8572E-03 -1.6061E-03 S10 -1.6956E-02 9.7970E-03 -6.4073E-03 2.1750E-03 -2.0242E-04 -1.1965E-04 5.4118E-05 S11 -4.6758E-02 2.2245E-02 -3.8492E-03 -3.5941E-03 3.1889E-03 -1.3084E-03 3.3596E-04 S12 -5.7572E-02 2.5764E-02 -8.3998E-03 1.5683E-03 -4.7801E-05 -4.8863E-05 1.2753E-05 S13 -1.9341E-02 7.9523E-03 -2.4198E-03 3.6713E-04 -2.6860E-05 3.0343E-09 2.0313E-07 S14 4.0419E-02 -5.9962E-03 9.2603E-05 8.3161E-05 -1.2639E-05 9.8249E-07 -4.8528E-08 S15 2.9645E-02 -1.2220E-02 2.6081E-03 -3.2510E-04 2.6589E-05 -1.5161E-06 6.2140E-08 S16 -2.1741E-02 2.1353E-03 -1.4561E-04 6.3324E-06 -1.7712E-07 3.2509E-09 -3.7711E-11

[0144] Table 10-1

[0145]

[0146]

[0147] Table 10-2

[0148] Figure 10A The axial chromatic aberration curve of the optical imaging lens of Example 5 is shown, which indicates the deviation of the convergent focus of light of different wavelengths passing through the lens. Figure 10B The astigmatism curve of the optical imaging lens of Example 5 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 10C The distortion curve of the optical imaging lens of Example 5 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 10D The chromatic aberration curve of the optical imaging lens of Example 5 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. 10A to 10D It can be seen that the optical imaging lens provided in Example 5 can achieve good imaging quality.

[0149] Example 6

[0150] The following reference Figures 11 to 12D An optical imaging lens according to Example 6 of the present application is described. Figure 11 A schematic structural diagram of an optical imaging lens according to Example 6 of the present application is shown.

[0151] like Figure 11As shown, the optical imaging lens includes, from the object side to the image side along the optical axis, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8 and a filter E9.

[0152] The first lens E1 has positive focal power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative focal power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive focal power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has negative focal power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has positive focal power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has negative focal power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive focal power, with its object-side surface S13 being convex and its image-side surface S14 being convex. The eighth lens E8 has negative focal power, with its object-side surface S15 being concave and its image-side surface S16 being concave. The filter E9 has an object-side surface S17 and an image-side surface S18. The optical imaging lens has an imaging surface S19. Light from an object passes through each surface S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0153] Table 11 shows the basic parameters of the optical imaging lens of Example 6, where the units of curvature radius and thickness / distance are all in millimeters (mm). Tables 12-1 and 12-2 show the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58, A59, A60, A61, A62, A63, A64, A70, A71, A72, A73, A74, A75, A76, A77, A8 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 and A 30 , wherein each aspheric surface shape can be defined by formula (1) given in the above embodiment 1.

[0154]

[0155]

[0156] Table 11

[0157] Face number A4 A6 A8 A10 A12 A14 A16 S1 -9.4911E-04 3.9703E-03 -1.0265E-02 1.5342E-02 -1.4873E-02 9.8105E-03 -4.5318E-03 S2 -1.2653E-03 -9.7398E-03 1.8894E-02 -2.4807E-02 2.2054E-02 -1.3596E-02 5.9457E-03 S3 -3.6122E-03 -4.1963E-03 8.6295E-03 -1.0172E-02 8.1951E-03 -4.5673E-03 1.7974E-03 S4 -3.0270E-03 -1.0823E-02 3.0777E-02 -4.4332E-02 4.1390E-02 -2.6335E-02 1.1628E-02 S5 -4.5822E-03 -1.1998E-02 3.8293E-02 -6.7977E-02 8.1604E-02 -6.9359E-02 4.2421E-02 S6 -3.0560E-03 2.9179E-03 -1.2578E-02 3.0809E-02 -4.5087E-02 4.3125E-02 -2.8194E-02 S7 -1.4048E-02 6.6676E-03 -2.0063E-02 3.6492E-02 -4.4564E-02 3.7312E-02 -2.1841E-02 S8 -1.8979E-02 2.6504E-03 -5.5872E-03 6.7376E-03 -5.8171E-03 3.6755E-03 -1.7004E-03 S9 -1.5831E-02 2.1519E-03 -2.9131E-03 1.0720E-03 4.0990E-04 -5.7690E-04 2.8882E-04 S10 -1.2253E-02 4.7954E-03 -2.9353E-03 6.0914E-04 2.8920E-04 -2.3049E-04 7.2271E-05 S11 -3.8384E-02 1.4344E-02 8.7466E-04 -5.4824E-03 3.7069E-03 -1.4063E-03 3.4830E-04 S12 -5.3602E-02 2.1558E-02 -5.9423E-03 6.7006E-04 1.7115E-04 -8.6003E-05 1.7262E-05 S13 -2.1311E-02 7.8280E-03 -2.2110E-03 3.0998E-04 -1.8786E-05 -6.3730E-07 2.2676E-07 S14 4.0279E-02 -5.8047E-03 7.3546E-05 7.9986E-05 -1.1894E-05 9.1748E-07 -4.5312E-08 S15 3.1998E-02 -1.2049E-02 2.4751E-03 -3.0320E-04 2.4582E-05 -1.3952E-06 5.7040E-08 S16 -2.0268E-02 1.8749E-03 -1.2051E-04 4.9509E-06 -1.2999E-07 2.1964E-09 -2.1970E-11

[0158] Table 12-1

[0159]

[0160]

[0161] Table 12-2

[0162] Figure 12A The axial chromatic aberration curve of the optical imaging lens of Example 6 is shown, which indicates the deviation of the convergent focus of light of different wavelengths passing through the lens. Figure 12B The astigmatism curve of the optical imaging lens of Example 6 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 12C The distortion curve of the optical imaging lens of Example 6 is shown, which represents the distortion values ​​corresponding to different image heights. Figure 12D The chromatic aberration curve of the optical imaging lens of Example 6 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. 12A to 12D It can be seen that the optical imaging lens provided in Example 6 can achieve good imaging quality.

[0163] Example 7

[0164] The following reference Figures 13 to 14D An optical imaging lens according to Example 7 of the present application is described. Figure 13 A schematic structural diagram of an optical imaging lens according to Example 7 of the present application is shown.

[0165] like Figure 13 As shown, the optical imaging lens includes, from the object side to the image side along the optical axis, an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8 and a filter E9.

[0166] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The fifth lens E5 has positive optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has negative optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The seventh lens E7 has positive optical power, with its object-side surface S13 being convex and its image-side surface S14 being convex. The eighth lens E8 has negative optical power, with its object-side surface S15 being concave and its image-side surface S16 being concave. The filter E9 has an object-side surface S17 and an image-side surface S18. The optical imaging lens has an imaging surface S19. Light from an object passes through each surface S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0167] Table 13 shows the basic parameters of the optical imaging lens of Example 7, where the units of curvature radius and thickness / distance are all in millimeters (mm). Table 14-1 and Table 14-2 show the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, 10 、A 12 、A 14 、A 16 、A 18 、A 20 、A 22 、A 24 、A 26 、A 28 and A 30 , wherein each aspheric surface shape can be defined by formula (1) given in the above embodiment 1.

[0168]

[0169]

[0170] Table 13

[0171] Face number A4 A6 A8 A10 A12 A14 A16 S1 -2.1890E-04 1.1007E-03 -4.4840E-03 8.5567E-03 -9.8719E-03 7.4038E-03 -3.7716E-03 S2 -2.7196E-03 -6.7921E-03 1.7243E-02 -2.6544E-02 2.5940E-02 -1.7015E-02 7.7699E-03 S3 -6.3521E-03 1.8720E-03 1.4323E-03 -4.8665E-03 5.7410E-03 -3.9336E-03 1.7663E-03 S4 -4.9752E-03 -5.5347E-03 2.3579E-02 -3.7733E-02 3.6976E-02 -2.4166E-02 1.0855E-02 S5 -4.5541E-03 -1.2231E-02 4.5693E-02 -8.8532E-02 1.1104E-01 -9.5680E-02 5.8005E-02 S6 -3.2536E-03 2.7377E-03 -9.2249E-03 2.0639E-02 -3.0020E-02 2.9692E-02 -2.0456E-02 S7 -1.4137E-02 7.0821E-03 -2.2553E-02 4.1859E-02 -5.0798E-02 4.1694E-02 -2.3802E-02 S8 -1.7963E-02 5.3711E-03 -1.6343E-02 2.4633E-02 -2.3395E-02 1.4838E-02 -6.5040E-03 S9 -1.4600E-02 5.8910E-03 -1.6677E-02 2.2403E-02 -1.9127E-02 1.1050E-02 -4.4238E-03 S10 -1.0781E-02 1.6517E-03 2.6219E-04 -1.3233E-03 1.0470E-03 -4.3410E-04 1.1122E-04 S11 -3.4103E-02 5.7031E-03 1.0324E-02 -1.1882E-02 6.5979E-03 -2.3063E-03 5.4460E-04 S12 -5.2248E-02 1.9411E-02 -4.4627E-03 1.3324E-05 3.7959E-04 -1.3335E-04 2.4881E-05 S13 -2.2074E-02 8.8578E-03 -2.9370E-03 5.7087E-04 -7.3879E-05 6.8362E-06 -4.5872E-07 S14 4.0185E-02 -5.8189E-03 1.1504E-04 6.9563E-05 -1.0688E-05 8.3586E-07 -4.1766E-08 S15 3.2645E-02 -1.1675E-02 2.3503E-03 -2.8526E-04 2.3069E-05 -1.3142E-06 5.4257E-08 S16 -1.8302E-02 1.5926E-03 -9.6824E-05 3.8041E-06 -9.5482E-08 1.5659E-09 -2.0225E-11

[0172] Table 14-1

[0173] Face number A18 A20 A22 A24 A26 A28 A30 S1 1.3362E-03 -3.3191E-04 5.7423E-05 -6.7467E-06 5.0991E-07 -2.2138E-08 4.1276E-10 S2 -2.5145E-03 5.7908E-04 -9.4071E-05 1.0511E-05 -7.6664E-07 3.2759E-08 -6.1903E-10 S3 -5.3824E-04 1.1141E-04 -1.5341E-05 1.3380E-06 -6.6503E-08 1.4237E-09 0.0000E+00 S4 -3.3700E-03 7.1576E-04 -1.0117E-04 8.9993E-06 -4.4838E-07 9.2590E-09 0.0000E+00 S5 -2.4884E-02 7.4816E-03 -1.5281E-03 1.9762E-04 -1.3558E-05 1.8869E-07 2.0857E-08 S6 9.8881E-03 -3.3255E-03 7.5896E-04 -1.1163E-04 9.5051E-06 -3.5446E-07 0.0000E+00 S7 9.5473E-03 -2.6765E-03 5.1241E-04 -6.3674E-05 4.6147E-06 -1.4753E-07 0.0000E+00 S8 1.9948E-03 -4.2588E-04 6.1818E-05 -5.8004E-06 3.1641E-07 -7.6009E-09 0.0000E+00 S9 1.2356E-03 -2.3885E-04 3.1180E-05 -2.6134E-06 1.2656E-07 -2.6850E-09 0.0000E+00 S10 -1.8539E-05 2.0369E-06 -1.4563E-07 6.4706E-09 -1.6016E-10 1.6430E-12 0.0000E+00 S11 -8.8798E-05 9.9296E-06 -7.3489E-07 3.3054E-08 -7.0698E-10 -1.5332E-12 2.4588E-13 S12 -2.9553E-06 2.3597E-07 -1.2821E-08 4.6610E-10 -1.0762E-11 1.4027E-13 -7.5714E-16 S13 2.2013E-08 -7.3384E-10 1.6184E-11 -2.1516E-13 1.3822E-15 -1.5507E-18 0.0000E+00 S14 1.4215E-09 -3.3577E-11 5.4684E-13 -5.9396E-15 3.9559E-17 -1.2612E-19 0.0000E+00 S15 -1.6411E-09 3.6295E-11 -5.7852E-13 6.4467E-15 -4.7426E-17 2.0527E-19 -3.8933E-22 S16 4.9424E-13 -2.3476E-14 9.3836E-16 -2.6223E-17 4.8490E-19 -5.3527E-21 2.6880E-23

[0174] Table 14-2

[0175] Figure 14A The axial chromatic aberration curve of the optical imaging lens of Example 7 is shown, which indicates the deviation of the convergent focus of light of different wavelengths passing through the lens. Figure 14B The astigmatism curve of the optical imaging lens of Example 7 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 14C The distortion curve of the optical imaging lens of Example 7 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 14D The chromatic aberration curve of the optical imaging lens of Example 7 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. 14A to 14D It can be seen that the optical imaging lens provided in Example 7 can achieve good imaging quality.

[0176] In Examples 1 to 7, the focal lengths f1 to f8 of the lenses, the effective focal length f of the optical imaging lens, the distance TTL along the optical axis from the object-side surface of the first lens element of the optical imaging lens to the imaging plane of the optical imaging lens, and half the diagonal length of the effective pixel area on the imaging plane of the optical imaging lens, ImgH, are shown in Table 15.

[0177] Parameters / Example 1 2 3 4 5 6 7 f1(mm) 10.38 9.91 9.81 9.43 9.25 9.50 9.85 f2(mm) -15.37 -15.82 -16.33 -16.86 -16.63 -16.89 -17.78 f3(mm) 18.67 16.96 15.97 18.16 18.62 17.31 17.63 f4(mm) 775.44 -48.79 -123.20 -122.98 -130.26 -124.49 -96.48 f5(mm) 41974.19 60.27 134.94 643.56 719.53 198.15 152.90 f6(mm) -34.62 -26.58 -39.98 -48.82 -49.22 -42.96 -42.80 f7(mm) 4.92 4.08 4.19 4.47 4.50 4.42 4.41 f8(mm) -4.39 -3.77 -3.56 -3.69 -3.70 -3.62 -3.68 f(mm) 9.79 9.44 9.08 9.68 9.64 9.50 9.63 TTL(mm) 11.00 10.60 10.15 10.51 10.47 10.40 10.52 ImgH(mm) 8.15 8.15 8.12 8.12 8.12 8.12 8.12

[0178] The conditional expressions in Examples 1 to 7 in Table 15 respectively satisfy the conditions shown in Table 16.

[0179] Conditional formula / Example 1 2 3 4 5 6 7 (BFL×ImgH) / TTL(mm) 2.04 2.23 2.15 2.16 2.14 2.11 2.17 f×tan(FOV / 2)(mm) 8.05 8.01 8.02 8.02 8.02 8.01 8.04 f1 / (R1+R2) 0.88 0.95 1.04 0.96 0.93 0.98 1.04 (f2-f6) / f3 1.03 0.63 1.48 1.76 1.75 1.51 1.42 (f7-f8) / f 0.95 0.83 0.85 0.84 0.85 0.85 0.84 (R5+R6) / (R3+R4) 1.26 1.34 1.32 1.17 1.13 1.24 1.30 (R13-R14) / (R13+R14) 3.27 2.31 2.28 2.03 2.01 2.16 2.20 (R16-R15) / f 1.03 0.90 0.89 0.86 0.87 0.86 0.88 ∑CT / BFL 1.90 1.76 1.89 1.83 1.85 1.89 1.83 (DT81+DT82) / ImgH 1.27 1.36 1.35 1.32 1.33 1.34 1.33 f123 / (CT1+CT2+CT3) 5.60 5.10 4.77 4.93 4.92 4.93 5.00 SAG72 / SAG71 1.61 1.60 1.59 1.54 1.52 1.56 1.62 (SAG61+SAG62) / SAG81 0.80 1.18 1.21 1.15 1.12 1.16 1.19 ET8 / ET7 2.01 1.03 1.25 1.29 1.12 1.37 1.67

[0180] Table 16

[0181] The present application also provides an imaging device, which is provided with an electronic photosensitive element for imaging. The electronic photosensitive element can be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS). The imaging device can be a standalone imaging device such as a digital camera, or an imaging module integrated into a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

[0182] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of protection provided in this application is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the concept of this application. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An optical imaging lens, characterized in that: Along the optical axis from the object side to the image side, they include: The first lens has positive refractive power, its object-side surface is convex and its image-side surface is concave; a second lens having negative optical power, the object-side surface of which is convex and the image-side surface of which is concave; The third lens has positive optical power, its object-side surface is convex and its image-side surface is concave; a fourth lens element having optical power and a concave object-side surface; a fifth lens having positive refractive power; a sixth lens element having negative optical power, the object-side surface of which is convex and the image-side surface of which is concave; a seventh lens element having positive optical power, with its object-side surface and image-side surface being convex; and an eighth lens element having negative optical power, whose object-side surface and image-side surface are concave; The optical imaging lens meets the following requirements: 2.0mm<(BFL×ImgH) / TTL≤2.23mm, 0.86≤(R16-R15) / f≤1.03, Wherein, BFL is the distance from the image side surface of the eighth lens to the imaging surface of the optical imaging lens along the optical axis, ImgH is half the diagonal length of the effective pixel area on the imaging surface, TTL is the distance from the object side surface of the first lens to the imaging surface along the optical axis, R16 is the curvature radius of the image side surface of the eighth lens, R15 is the curvature radius of the object side surface of the eighth lens, and f is the effective focal length of the optical imaging lens. The number of lenses having optical power in the optical imaging lens is eight.

2. The optical imaging lens according to claim 1, wherein: The effective focal length f of the optical imaging lens and the maximum field of view FOV of the optical imaging lens satisfy: 8.0mm<f×tan(FOV / 2)<8.1mm.

3. The optical imaging lens according to claim 1, wherein: The effective focal length f1 of the first lens, the curvature radius R1 of the object-side surface of the first lens, and the curvature radius R2 of the image-side surface of the first lens satisfy: 0.88≤f1 / (R1+R2)≤1.

04.

4. The optical imaging lens according to claim 1, wherein: The effective focal length f2 of the second lens, the effective focal length f6 of the sixth lens, and the effective focal length f3 of the third lens satisfy: 0.6<(f2-f6) / f3<1.

8.

5. The optical imaging lens according to claim 1, wherein: The effective focal length f7 of the seventh lens, the effective focal length f8 of the eighth lens, and the effective focal length f of the optical imaging lens satisfy the following requirements: 0.8<(f7-f8) / f≤0.

95.

6. The optical imaging lens according to claim 1, wherein: The curvature radius R5 of the object-side surface of the third lens, the curvature radius R6 of the image-side surface of the third lens, the curvature radius R3 of the object-side surface of the second lens, and the curvature radius R4 of the image-side surface of the second lens satisfy: 1.1<(R5+R6) / (R3+R4)≤1.

34.

7. The optical imaging lens according to claim 1, wherein: The curvature radius R13 of the object-side surface of the seventh lens and the curvature radius R14 of the image-side surface of the seventh lens satisfy: 2.0<(R13-R14) / (R13+R14)<3.

3.

8. The optical imaging lens according to any one of claims 1 to 7, wherein: The sum ΣCT of the center thicknesses of the first lens to the eighth lens on the optical axis and the distance BFL from the image side surface of the eighth lens to the imaging plane along the optical axis satisfy: 1.76≤∑CT / BFL≤1.

90.

9. The optical imaging lens according to any one of claims 1 to 7, wherein: The maximum effective radius DT81 of the object side surface of the eighth lens, the maximum effective radius DT82 of the image side surface of the eighth lens, and half the diagonal length ImgH of the effective pixel area on the imaging plane satisfy: 1.27≤(DT81+DT82) / ImgH<1.

4.

10. The optical imaging lens according to any one of claims 1 to 7, wherein: The combined focal length f123 of the first lens, the second lens, and the third lens, the center thickness CT1 of the first lens on the optical axis, the center thickness CT2 of the second lens on the optical axis, and the center thickness CT3 of the third lens on the optical axis satisfy the following conditions: 4.77≤f123 / (CT1+CT2+CT3)≤5.

60.

11. The optical imaging lens according to any one of claims 1 to 7, wherein: An axial distance SAG72 from the intersection of the image-side surface of the seventh lens and the optical axis to the vertex of the effective radius of the image-side surface of the seventh lens and an axial distance SAG71 from the intersection of the object-side surface of the seventh lens and the optical axis to the vertex of the effective radius of the object-side surface of the seventh lens satisfy: 1.5<SAG72 / SAG71≤1.

62.

12. The optical imaging lens according to any one of claims 1 to 7, wherein: An axial distance SAG61 from the intersection of the object-side surface of the sixth lens and the optical axis to the vertex of the effective radius of the object-side surface of the sixth lens, an axial distance SAG62 from the intersection of the image-side surface of the sixth lens and the optical axis to the vertex of the effective radius of the image-side surface of the sixth lens, and an axial distance SAG81 from the intersection of the object-side surface of the eighth lens and the optical axis to the vertex of the effective radius of the object-side surface of the eighth lens satisfy: 0.80≤(SAG61+SAG62) / SAG81≤1.

21.

13. The optical imaging lens according to any one of claims 1 to 7, wherein: The edge thickness ET8 of the eighth lens and the edge thickness ET7 of the seventh lens satisfy: 1.0<ET8 / ET7≤2.01.

Images